
Alta Mountain stands over a landscape defined by decades of mineral exploration and high-mountain ranching in Jefferson County. During this mid-1990s revision, the terrain is marked by a high density of mining activity, including a prominent Mine Shaft, an Open Pit Mine, and dozens of individual Prospects clustered near the settlements of Wickes and Amazon. The drainage network, featuring Prickly Pear Creek and its many tributaries like Iron Ore Gulch and Beaverton Gulch, dictates the movement through the Boulder Hills. In the lower Boulder Valley, the agricultural footprint remains visible at Sloan Ranch and Rieder, where a complex system of Ditches and canals manages the water supply. Large portions of the eastern terrain are protected within the Deerlodge National Forest, where the topography rises toward Turkey Park.
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This is the sole edition of this map. No revisions or reprints were ever made.
1886 · Fort Logan
USGS Topo · 1:250,000
1889 · Helena
USGS Topo · 1:250,000
1893 · Helena
USGS Topo · 1:250,000
1899 · Boulder
USGS Topo · 1:125,000
1899 · Helena
USGS Topo · 1:250,000
1903 · Helena
USGS Topo · 1:250,000
1947 · Butte
USGS Topo · 1:250,000
1948 · White Sulphur Springs
USGS Topo · 1:250,000
1950 · Devils Fence
USGS Topo · 1:62,500
1950 · Jefferson City
USGS Topo · 1:62,500